Answer
$g(x)$
Work Step by Step
$x=1990-1950=40$,
$f(40)=6.25(1.029)^{40}=19.61$
$g(40)=\frac{38.8}{1+6.3e^{-0.051\times 40}} = 21.795$
The actual data on the bar graph is $21.3$. Therefore, $g(x)$ is a better model.
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